| Relationships | Role | Relationship Start | Relationship End |
| Gs Advisors Vi Aiv, Ltd. | Parent | 9/21/2008 | |
| Umbrellastream Limited Partnership Incorporated | Subsidary | 8/14/2009 | |
| Gscp Vi Aiv Navi, Ltd. | Subsidary | 4/20/2011 | |
| Umbrellastream General Partner Limited | Subsidary | 9/21/2008 |